The hop on/hop off busses are a great way to get around to the tourist stuff. You buy a ticket, good for two days, and get on and off on the three routes as much as you want. They go all over the place.
There was a snack bar/restarurant up at Corcovado that had some incredible food, the fruit plate is totally amazine (We were there in October, and are still talking about it) and the BBQ meat was enough for four or five, but served one.
Don't forget you need a visa ahead of time to go, you can't get one when you arrive.
[This message has been edited by cordelli (edited 04-23-2001).]